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Forum Index : Electronics : Schematic error.
| Author | Message | ||||
Downwind Guru  Joined: 09/09/2009 Location: AustraliaPosts: 2333 |
I think there is an error in Gill’s (rip) data logger schematic. He shows the SDA line from the eeprom and rtc connected to picaxe IC pin 11 and I think it should be IC pin 7 as this is the I2C sda pin on a 18x. If building this circuit it would be advisable to swap IC pins 11 and 7 and the pull up resistor changed from pin 11 to pin 7 Please note I have quoted the ic pin numbers not the picaxe pins. There is also some errors in the picaxe outputs numbering in relation to the actual ic pins. I don’t see how the circuit will work as drawn with the error. I think this is only a paper error and not a circuit fault. (easy mistake to make) Maybe a errata should be added as a foot note to Gill’s work. Pete. Sometimes it just works |
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Gizmo Admin Group  Joined: 05/06/2004 Location: AustraliaPosts: 5078 |
Yes your right. His veroboard layout is right, is just the circuit thats out. I've put a note on the web page. Thanks for spotting the error. Glenn The best time to plant a tree was twenty years ago, the second best time is right now. JAQ |
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